A303986 - OEIS

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A303986 as a triangular array

1

1 -2

1 -6 12

1 -12 60 -120

1 -20 180 -840 1680

1 -30 420 -3360 15120 -30240

1 -42 840 -10080 75600 -332640 665280

1 -56 1512 -25200 277200 -1995840 8648640 -17297280

1 -72 2520 -55440 831600 -8648640 60540480 -259459200 518918400

1 -90 3960 -110880 2162160 -30270240 302702400 -2075673600 8821612800 -17643225600

1 -110 5940 -205920 5045040 -90810720 1210809600 -11762150400 79394515200 -335221286400 670442572800

A303986 as a square array

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`-2`	`-6`	`-12`	`-20`	`-30`	`-42`	`-56`	`-72`	`-90`	`-110`
`12`	`60`	`180`	`420`	`840`	`1512`	`2520`	`3960`	`5940`
`-120`	`-840`	`-3360`	`-10080`	`-25200`	`-55440`	`-110880`	`-205920`
`1680`	`15120`	`75600`	`277200`	`831600`	`2162160`	`5045040`
`-30240`	`-332640`	`-1995840`	`-8648640`	`-30270240`	`-90810720`
`665280`	`8648640`	`60540480`	`302702400`	`1210809600`
`-17297280`	`-259459200`	`-2075673600`	`-11762150400`
`518918400`	`8821612800`	`79394515200`
`-17643225600`	`-335221286400`
`670442572800`

A303986 as an upper right triangle

`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
	`-2`	`-6`	`-12`	`-20`	`-30`	`-42`	`-56`	`-72`	`-90`	`-110`
		`12`	`60`	`180`	`420`	`840`	`1512`	`2520`	`3960`	`5940`
			`-120`	`-840`	`-3360`	`-10080`	`-25200`	`-55440`	`-110880`	`-205920`
				`1680`	`15120`	`75600`	`277200`	`831600`	`2162160`	`5045040`
					`-30240`	`-332640`	`-1995840`	`-8648640`	`-30270240`	`-90810720`
						`665280`	`8648640`	`60540480`	`302702400`	`1210809600`
							`-17297280`	`-259459200`	`-2075673600`	`-11762150400`
								`518918400`	`8821612800`	`79394515200`
									`-17643225600`	`-335221286400`
										`670442572800`

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Last modified April 18 17:40 EDT 2024. Contains 371781 sequences. (Running on oeis4.)